Astrolabe Catalogue

 

Small image of astrolabe rete separated from astrolabe. Click to enlarge.
Date ca. 1700
Maker Khalīl Muḥammad ibn Ḥasan ‘Alī
Place Iṣfahān
Material Brass
Inventory no. 50987
Acquisition Presented by J. A. Billmeir in 1957
The rete is of the foliate (single knob) type. The zodiac on the rete is labelled: حمل , ثور , جوزا , سرطان , اسد , سنبل , ميزان , عقرب , قوس , جدي , دلو , حوت

Scales


Type Range & Units Numbered Geometry Location
Ecliptic 0 - 30 Degrees of ecliptic Every 6  Ecliptic ecliptic

Stars

There are 28 stars on the rete marked with foliate pointers. Unless otherwise indicated the star name, mediation and declination are as marked/measured on the rete.
Click on the star name or modern star name to search for other astrolabes with the same star.
Star name
(on instrument)
Modern star
(if known)
Mediation Declination Pointer
ذنب قيطس Deneb Kaitos 3.0° of Aries -10° foliate
صدر قيطس 12.0° of Taurus -14° foliate
مسافت النهر Zaurac 26.0° of Taurus -13° foliate
عين الثور Aldebaran 13.0° of Gemini 23° foliate
رجل اليسرى Rigel 20.0° of Gemini -7° foliate
يد يمنى Betelgeuse 4.0° of Cancer 16° foliate
شعرى يمانيه Sirius 7.0° of Cancer -13° foliate
شامي يمعرى Procyon 18.0° of Cancer foliate
طرف السفينه Rho Pup 24.0° of Cancer -21° foliate
فرد الشجاع Alphard 17.0° of Leo -7° foliate
قاعده Alkes 10.0° of Virgo -14° foliate
جناح الغراب Gienah 28.0° of Virgo -14° foliate
اعزل Spica 18.0° of Libra -9° foliate
سماك رامح Arcturus 3.0° of Scorpio 23° foliate
عنق الحيه Unukalhai 12.0° of Scorpio 10° foliate
فكه Alphecca 25.0° of Scorpio 27° foliate
قلب العقرب Antares 4.0° of Sagittarius -26° foliate
ركبه الحوا 10.0° of Sagittarius foliate
راس الحوا Rasalhague 17.0° of Sagittarius 18° foliate
نسر واقع Vega 9.0° of Capricorn 37° foliate
ذنب العقاب Deneb el Okab 14.0° of Capricorn 30° foliate
طاير Altair 20.0° of Capricorn foliate
ذنب الدجاجه Deneb 4.0° of Aquarius 42° foliate
مقار الدجاجه 10.0° of Aquarius 30° foliate
فم الفرس Enif 18.0° of Aquarius foliate
ساق Skat 7.0° of Pisces -17° foliate
كف الخضيب Caph 23.0° of Pisces 58° foliate

Horse Image:

astrolabe part (photo)

Horse Image:

astrolabe part (photo)

Horse Image:

astrolabe part (photo)

Pin & Horse

The rete is attached using a pin & horse.
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